A2074/14 - FLASHING LIGHTS OF PRECISION APPROACH LIGHTING SYSTEM FROM THE
THR RWY 26 UP TO 600M OUT OF SERVICE DUE TO MAINTENANCE.
THE MISSING FLASHING LIGHTS HAVE TO BE CONSIDERED TO ESTABLISH
THE MIN VIS/CMV/RVR (AS APPLICABLE). 28 OCT 10:14 2014 UNTIL 31 OCT 22:00 2014.
CREATED: 28 OCT 10:15 2014

A1869/14 - IN THE TERMINAL AREA OF INNSBRUCK THE ATC FREQUENCIES 119,275 MHZ
AND 120,100 MHZ ARE OPERATED BY ATC IN OFFSET CARRIER MODE IN 25 KHZ
CHANNEL SPACED ENVIRONMENT.
LEGALLY, THIS IS DESCRIBED IN ICAO ANNEX 10 VOLUME 3 PART II.
OWNER: USE CLASS C RECEIVERS.
PIC: SWITCH TO 25 KHZ CHANNEL SPACING.
TECHNICIANS: USE CARRIER-SQUELCH INSTEAD OF CARRIER-TO-NOISE SQUELCH
AND AVOID CARRIER LEVEL OVERRIDE. REFERRING TO NOTE 1 IN ICAO ANNEX
10 VOLUME 3 ATTACHMENT TO PART II CHAPTER 1.2:
IN AIRCRAFT RECEIVERS WHICH EMPLOY A MEASUREMENT OF THE RECEIVED
CARRIER-TO-NOISE RATIO TO OPERATE THE MUTE, THE AUDIO HETERODYNES
CAUSED BY THE RECEPTION OF TWO OR MORE OFF-SET CARRIERS CAN BE
INTERPRETED AS NOISE AND CAUSE THE AUDIO OUTPUT TO BE MUTED EVEN WHEN
AN ADEQUATE WANTED SIGNAL IS PRESENT. IN ORDER THAT THE AIRBORNE
RECEIVING SYSTEM CAN CONFORM WITH THE SENSITIVITY RECOMMENDATIONS
CONTAINED IN ICAO ANNEX 10 VOLUME 3 PART II, 2.3.2.2, THE DESIGN OF
THE RECEIVERS MAY NEED TO ENSURE THAT THEIR SENSITIVITY IS MAINTAINED
AT A HIGH LEVEL WHEN RECEIVING OFFSET CARRIER TRANSMISSIONS. THE USE
OF A CARRIER LEVEL OVERRIDE IS AN UNSATISFACTORY SOLUTION TO THIS
REQUIREMENT, BUT WHERE IT IS EMPLOYED, SETTING THE OVERRIDE LEVEL AS
LOW AS POSSIBLE CAN AMELIORATE THE PROBLEM. 29 SEP 05:53 2014 UNTIL 26 DEC 23:59
2014 ESTIMATED. CREATED: 29 SEP 05:53 2014

REF:NIL
IN CASE OF ENGINE-OUT FLY V2 OR V2 20 MAX. UNTIL ABOVE MSA.
LEVEL-OFF AT AN ALTITUDE ROUNDED OFF TO THE FIRST 1000 FT OF THE HIGHEST MSA.
E.G: MSA EHAM; 1.7 AND 2.3 LEVEL-OFF 3000 FT. AFTER LANDING MAKE A REP TO OCC ON 131.975
SOURCE:SPL/HV/OCC
END VALID:UFN